body {
    font-size:14px;
}
.header {
    width: 100%;
    background-color: gray;
    background-image: url(../img/header_bg.png);
    /* background-clip; */
    background-size: cover;

}

.footer {
    background-color: gray;
    background-image: url(../img/footter_bgsli.png);
    text-align: center;
    background-size:contain;
    
}

.main {
    margin: 0 auto;
    text-align: center;
    background-size: contain;
}